Abstract: A method comprises receiving, at a plurality of optical distributors of a photonic chip, optical energy from a plurality of primary laser sources. Each of the optical distributors receives optical energy from a respective primary laser source at a respective first input. The method further comprises detecting a failed primary laser source of the primary laser sources using control circuitry of a sparing system. The sparing system further comprises one or more secondary laser sources configured to provide optical energy to respective second inputs of the optical distributors. A first one of the secondary laser sources is optically coupled with at least two of the optical distributors. The method further comprises controlling, using the control circuitry, a first one of the secondary laser sources to selectively provide optical energy to the optical distributor whose first input is optically coupled with the failed primary laser source.

Abstract: An optical fiber-cable branch member includes: a branch member main body; a cable fixing portion that holds and fixes an end portion of a jacket of an optical fiber-cable onto the branch member main body; and a tube fixing portion that fixes a plurality of protective tubes onto the branch member main body. The optical fiber-cable includes a first optical fiber core bundle and the jacket, and the jacket coats an outer circumference of the first optical fiber core bundle and includes a tension-resisting member buried in a cable longitudinal direction. The plurality of protective tubes cover and protect respective outer circumferences of a plurality of second optical fiber core bundles obtained by branching the first optical fiber core bundle extending from the end portion of the jacket.

Abstract: An eye tracker having a first waveguide for propagating illumination light along a first waveguide path and propagating image light reflected from at least one surface of an eye along a second waveguide path. At least one grating lamina for deflecting the illumination light out of the first waveguide path towards the eye and deflecting the image light into the second waveguide path towards a detector is disposed adjacent an optical surface of the waveguide.

Abstract: Methods and structures for shielding optical waveguides are provided. A method includes forming a first optical waveguide core and forming a second optical waveguide core adjacent to the first optical waveguide core. The method also includes forming an insulator layer over the first optical waveguide core and the second optical waveguide core. The method further includes forming a shielding structure in the insulator layer between the first optical waveguide core and the second optical waveguide core.

Abstract: A cable device includes an elongated transmission member that defines a central axis, outer cover, and illumination element. The outer cover has an outer surface and a bore along its length. The illumination element extends in a direction parallel to the central axis and along a length of the transmission member. The illumination element has first and second exposed portions extending through separated openings of the outer surface of the outer cover. Each of first and second cross-sections of the respective first and second exposed portions define respective first and second illumination element central axes extending through the cross-sections in one or more directions transverse to the central axis of the transmission member. The illumination element is configured to convey a given light such that the given light that enters the first exposed portion of the illumination element exits the second exposed portion of the illumination element.

Abstract: The present disclosure is generally directed to an optical transceiver module that includes a mounting section for aligning and coupling to associated TOSA modules. In particular, an embodiment of the present disclosure includes TOSA and ROSA components disposed on a printed circuit board assembly (PCBA). The PCBA includes a plurality of grooves at a optical coupling end to provide a TOSA mounting section. Each of the grooves provides at least one mating surface to receive and couple to an associated TOSA module. Opposite the optical coupling end, the PCBA includes an electric coupling section for coupling to, for example, a transmit (RX) circuit that provides one or more electrical signals to drive TOSA modules coupled to the TOSA mounting section.

Abstract: An optical fiber with lens in which one end face of a first GRIN lens is connected to an end face of an optical fiber and one end face of a second GRIN lens is connected to another end face of the first GRIN lens, wherein the optical fiber and the first and second GRIN lenses are coaxially connected, a numerical aperture of the first GRIN lens is smaller than a numerical aperture of the second GRIN lens, and a position in a radial direction of a minimum distribution refractive index nt of the second GRIN lens is set on an inner side of an outer edge of the second GRIN lens and set at a same position as or on an outer side of an outermost periphery of light that is spread by the first GRIN lens.

Abstract: A method and apparatus for simultaneously modulating at least two distinct characteristics of an optical carrier propagating in an optical waveguide with at least two electrical signals includes transmitting an optical beam that includes the optical carrier into an optical waveguide defined in electro-optic material, and applying the at least two electrical signals at the same time to generate an electric field in the optical waveguide. The instantaneous predominant orientation of the electric field in the optical waveguide generated by the applied at least two electrical signals depends on the relative instantaneous values of the applied electrical signals. The at least two distinct characteristics of the optical carrier propagating in the optical waveguide are simultaneously and independently modulated depending on the predominant orientation of the electric field in the optical waveguide as a result of the application of the at least two electrical signals.

Abstract: A multicore fiber includes: a first core having a first propagation loss of a first light beam in a mode one order higher than a mode of a second light beam that transmits information. The first propagation loss is 0.02 dB/m or more and 1 dB/m or less, in a wavelength band of light beams including the second light beam that transmit the information when a bend having a diameter of 280 mm is applied to the multicore fiber.

Abstract: A light beam can be steered using a non-mechanical beam steerer structure. For example, a combination of sub-aperture and full-aperture beam steering structures can be used (e.g., corresponding to regions of controlled variation in an index of refraction). The sub-aperture elements can include tapered structures defining a saw-tooth or triangular footprint in the plane in which the in-plane steering is performed. Respective rows of sub-aperture tapered structures can be configured to controllably steer the light beam in the first in-plane direction, wherein at least one row of sub-aperture tapered structures defines a first base region edge that is tipped at a first specified in-plane angle relative to a second base region edge defined by another row. Use of the tipped configuration can simplify a configuration of the beam steerer structure, such as allowing a configuration lacking a compensation plate at the input.

Abstract: One example of a cable assembly includes a plurality of 1-lane cable assemblies and latching features to couple the cable assembly to a receptacle. Each 1-lane cable assembly generally includes a cable and a cable connector attached to at least one end of the cable. As an example, surfaces of each cable connector of a 1-lane cable assembly generally includes features to conjoin with corresponding features on surfaces of cable connectors of other 1-lane cable assemblies. As an example, the conjoined features may secure the 1-lane cable assemblies to each other.

Abstract: Roughly described, an integrated optical device includes both a PLC chip and an attached SiPh chip. The PLC chip has a PLC waveguide which terminates at an end facet. The SiPh chip has a SiPh waveguide which includes a Bragg grating which diffracts light from the SiPh waveguide toward the PLC chip. The PLC chip also has a turning mirror to reflect light emitted from the Bragg grating onto the end facet of the PLC waveguide. The Bragg grating is designed to direct light emitted from the Bragg grating into the end facet of the PLC waveguide so that after reflecting off the turning mirror the light focuses within one Rayleigh distance of the end facet of the PLC chip.

Abstract: One example includes an optical fiber interface. The interface includes a first substrate comprising a pair of opposing surfaces. The substrate includes an opening extending therethrough that defines an inner periphery. One surface of the opposing surfaces of the first substrate can be configured to be bonded to a given surface of a second substrate. The interface also includes a plurality of optical fibers secured to the other opposing surface of the first substrate and extending inwardly from a plurality of surfaces of the inner periphery at fixed locations to align the set of optical fibers to optical inputs/outputs (I/O) of an optical system chip that is coupled to the given surface of the second substrate and received through the opening.

Abstract: The present disclosure concerns a device for forming at least one focused beam in a near zone, from an electromagnetic wave incident on said device. Such device is remarkable in that it comprises at least one layer of a dielectric material comprising at least partially a first element, said first element having a first refractive index value, said first element comprising at least partially a second element, said second element having a second refractive index value greater than said first index value, and wherein said second element comprises at least a base surface, defined with respect to an arrival direction of said electromagnetic wave, and wherein said at least a base surface comprises at least two opposite edge line segments whose shape and associated base angles between said at least a base surface and a lateral surface of said second element, in a vertical plane with respect to said at least a base surface, control a shape of said at least one focused beam.

Abstract: An assembly tool for terminating an optical fiber with an optical fiber connector comprises a base having a connector cradle to hold said connector, a buffer clamp activation shuttle slideably disposed on the base to push a sleeve over a buffer clamp of the connector, and an activation mechanism pivotally mounted to the base. The activation mechanism includes an actuation lever to press a securing cap over a mechanical element in the connector, and a drive shaft coupled to the actuation lever. Moving the actuation lever from a first position to a second position activates the buffer clamp activation shuttle and presses the securing cap over the mechanical element.

Abstract: An optical fiber clip comprises a body portion. The body portion has a flexible architecture providing flexibility between an un-flexed position and a flexed position. The body portion includes a channel there through. The channel narrows at first and second ends of the channel. The narrowed first and second ends of the channel are configured to establish an interference fit with an optical fiber received therein when the body portion is in the un-flexed position and to release the interference fit when the body portion is in the flexed position.

Abstract: Aspects and techniques of the present disclosure relate to an enclosure arrangement that provides a seal useful for sealing optical fiber cables. The enclosure arrangement can include a housing with two shell members that fit together to define a cable passage. The two shell members can include circumferential sealing ribs and longitudinal sealing ribs that each has a rounded profile. A sealant material can be used to wrap the optical fiber cable. When the housing is compressed into contact with the sealant material, the circumferential and longitudinal sealing ribs can apply a uniform, controlled pressure about the optical fiber cable without puncturing or damaging the sealant material.

Abstract: A structure for optically aligning an optical fiber to a photonic device and method of fabrication of same. The structure optically aligns an optical fiber to the photonic device using a lens between the two which is moveable by actuator heads. The lens is moveable by respective motive sources associated with the actuator heads.

Abstract: In integrated optical structures (e.g., silicon-to-silicon-nitride mode converters) implemented in semiconductor-on-insulator substrates, wire waveguides whose sidewalls substantially consist of portions coinciding with crystallographic planes and do not extend laterally beyond the top surface of the wire waveguide may provide benefits in performance and/or manufacturing needs. Such wire waveguides may be manufactured, e.g., using a dry-etch of the semiconductor device layer down to the insulator layer to form a wire waveguide with exposed sidewalls, followed by a smoothing crystallographic wet etch.

Abstract: An optical device includes an array of unit optical elements. Each of the unit optical elements includes a plurality of amplitude adjustment (AA) elements, each of the plurality of AA elements configured for processing one of different phases of an optical signal; an optical antenna, and a combining mechanism for optically coupling the plurality of AA elements to the optical antenna. The optical device also includes a controller coupled to the plurality of AA elements, the controller configured for generating control signals for the plurality of AA elements according to a target optical beam pattern.